CiputatHot dip galvanized rectangular pipe manufacturerWhat is the code name and laying method of

How to specify the yield point of square tube: if the stress decreases, the upper and lower yield points shall be distinguished. The unit of yield point is nmm2 (MPa

The service life has a great impact on the isotropic performance of the square tube. The use of secondary refining technology (including vacuum refining, ESR and ladle powder spraying) can improve the purity of the square tube, which is beneficial to improve the performance.

Ciputat.Forging square tube: a kind of pressure processing in which the reciprocating impact force of the forging hammer or the pressure of the press changes the blank into the shape and size we need. It is generally divided into forging and die forging. It is often used to produce large-scale materials and materials with large square tube size.

Stainless steel q355b square pipe for mechanical structure, Standard No.: gbt12770-1991. Representative materials 0Cr 1cr1 00cr19ni 1Cr18Ni 0cr18ni11nb, etc. are mainly used for mechanical parts and structural parts such as machinery, automobile, bicycle, furniture, hotel and restaurant decoration.

.In the case of dynamic load, plastic design usually calculates the allowable stress according to the safety factor that the allowable stress is not less than the dynamic load and multiplied by the allowable stress. In the case of bending of an axis, it can be calculated by the formula a = W. replacing the calculated strength with plasticity can improve the bearing capacity of the member by 14%.

In order to ensure the stability of the perforation performance and chemical properties of the billet of the square tube, the technical regulations shall be strictly implemented in the operation of the circular furnace, the operation of the heating furnace shall be frequently the abnormal conditions shall be handled in time and recorded, and the follow-up posts and quality management department shall be notified in time for handling.

The strength, plasticity and angle discussed later are the machine function indicators of metal under static load. In practice, many mechanical machines are under repeated load, and the whole opportunity is tired in this environment.

Hot rolled q355b square tube continuous casting slab or blooming slab is used as raw material, heated by stepping heating furnace and descaled by high-pressure water into roughing mill. Roughing material enters finishing mill after head cutting, tail cutting and then computer rolling. After final rolling, it is rolled into straight hair coil through laminar cooling and coiler. The head and tail of straight hair curl are often tongue shaped and fish tail shaped, with poor accuracy of thickness and width, and there are often defects such as wave shape, hem, tower shape and so on. The coil weight is heavy and the inner diameter of the steel coil is 690mm.

The reason why it is divided into two types is that chemical cleaning can only clean the surface very thoroughly, and it is difficult to achieve the desired results in some fine cracks.

During the storage of square tubes, pay attention to the stacking layers of square tubes to avoid local stress at the tube end caused by too many layers, resulting in radial plastic deformation and layer damage of square tubes. It is recommended that the stacking layers of smooth pipes refer to apirp 5l1-2009 Recommended Practice for railway transportation of square pipes for pipelines or apirp 5lw-2009 Recommended Practice for ship and sea vessel transportation of square pipes for pipelines. It can also be determined by test or implemented according to the safe stacking height of square pipes. The stacking layers of pipes shall be implemented according to GBT 23257-2009 polyethylene layer of buried steel pipelines.

install.Do a good job in the following aspects to effectively improve the use of square tubes

Large diameter welded square pipe for low pressure fluid transmission, Standard No.: gbt14980-1994. Representative material: grade q235ab. It is mainly used to transport low-pressure fluids such as water, sewage gas, air and heating steam.

Surface adhesion resistance is an important feature of square tubes. At present, square tubes are mostly used for transportation, such as warehouses, houses and bridges, but it is not suitable for moving components such as wheels. At this time, people often use the plastic theory. The research of the plastic theory can be traced back to 1914. In 1975, the European Design Association formulated D plastic design code which is mainly used for plane beams under static load and bending stress For the frame structure with stress,CiputatStainless steel 25 square tube, the requirements are as follows:% 26sigma; B% 26sigma;% 26zeta;% 26ge;% 26delta;% 26ge; 15% for high-rise buildings, more detailed calculation is required. In the case of plastic design, the allowable stress is usually calculated according to the safety factor that the allowable stress is not less than the dynamic load and multiplied by the allowable stress. In the case of bending of an axis, the formula a = w can be used Using plasticity instead of calculated strength can improve the bearing capacity of members by 14%.

High quality and low price.Solid bending, as the name suggests,Ciputat120 square tube, is to compact the bending. During real bending, the inner and outer rollers and the inner and outer walls of the pipe blank are compacted in both directions.

High pressure oil pipe for diesel engine (gb3093-200) is a cold drawn square pipe for high pressure pipe of diesel engine system.

Square pipe is an important pipe. Its application in various fields has different performance. According to its different performance, we have carried out different transformation on the other pipe to ensure that the square pipe can be better used. We should make the right choice when purchasing. Below I will introduce the correct way of painting the lower pipe.

Ciputat.Process flow of square tube drawing: because the size of the die hole of the square tube drawing is smaller than the outer diameter of the tube in front of the drawing, in order to make the front end of the square tube pass through the die hole smoothly, so that the clamp jaw of the drawing trolley can the head of the square tube, the end of the square tube with a fixed length should be heated in the slit heating furnace It is generally 150 ~ 200mm, and the heating temperature is between 750 ~ 900 ℃ according to different wall thickness. Then use 75 ~ 300kg air hammer to sharpen and grind the head of the square pipe. Generally, the square pipe with diameter less than 22mm can be sharpened by rotary forging hammer or roll forging machine.

According to production, square tubes are divided into hot-rolled tubes, cold-rolled tubes, cold drawn tubes, pipe jacking, etc. According to the section shape, the square tube is divided into round and special-shaped. The special-shaped tube has many complex shapes, such as square, oval, angular, angular, melon seed, star and winged tube.

Both internal and external welding of square pipes are carried out by American Lincoln Electric welding machine for single wire or double wire submerged arc welding, so as to obtain stable welding specifications.